Geoege woolnough



ZSheetS-Sheet 2, G. WOULNOUGH.

Molding Apparatus.

No, 225,314. lPatented Mar.V 9', 1880.

UNITED STATES 'PATENT OFFICEw GEORGE WOOLNOUGH, OF HALBERSTADT, PRUSSIA.

MOLDING APPARATUS.

SPECIFICATION forming part of Letters` Patent No. 225,314, dated March 9, 1880.

Application filed October 22, 1877. Patented in England, June 14, 1876.

To all whom it may concern Be it known that I, GEORGE WooLNoUGH, of Halberstadt, Kingdom of Prussia, have invented a new and useful Improvement in Apparatus for -Molding Metals, of which the following is a specication.

In the drawings, Figure l represents an end elevation of an apparatus for molding metals embodying my improvement, which view is partly in section; Fig. 2, a top View of the same, and Fig. 3 a side elevation.

The same letters represent like parts in all the drawings wherever used.

A is the frame-work upon which the apparatus is mounted; B, the drawing-table, supported and capable of moving upon rails by means of wheels u. (l is a halt' of a moldingbox. E is the pattern-plate, which, by means of trunnions c and c', rests upon and is capable of turning in bearings carried upon the upper extremity of the rod P. P are rods capable of sliding in packing-boxes or bearings M. The rod P is caused to move vertically by means of a thread or rack, t, into which meshes a pinion, K, which pinion is actuated by a lever, K.

O are pins projecting from the molding-box C and passing through holes in the plate E,

which pins, by having cotters p passed through holes therein, hold the box C and plate E together. A

R is a telescopic casing attached to and depending from the upper extremity of the continuation of therod P, and inclosing and workinglightly around thepacking-boxes M,and preventing sand or any other foreign substances from coming in contact with or adhering to the rods P or the packing-boxes M.

Lis a set-screw working through the cap E and abutting against the trunnions e and e.

A detailed description of the mode of working this machine is unnecessary. Its general mode of operation is, however, as follows: The m01ding-plate E having, by means of the trunnions e and e', been turned, so that the face now shown as having the box G attached to it shall be turned up instead of down, the box C is placed on and attached to saidplate by means of the pins O and cotters p. The box is then rammed with sand, and is, when properly filled, turned on the trunnions e e',

by which it is transferred to the opposite side of the axes and rests, in the position shown in the drawings, upon the draw-table B. The set` screws L are then screwed tightly down to prevent the turning of the plate E on. its trunnions e e. The cotters p are removed and the plate E vertically raised from the sand and molding-box O by means of the rods P, actuated by the thread or rack t, and pinion K,.op erated by the lever K. The draw-table B is then drawn from its position under the mold- Vplate far enough to allow of the removal of the box C, containing the sand, and is thus prepared for receiving the molten metal. The counter-half of the molding-box is similarly prepared, and so the operation continues.

My improvement in the foregoing apparatus consists in providing the set-screws L for the purpose of securing the molding-plate E in a lixed position, that it may be steadily and unwaverin gly withdrawn from the sand7 and a perfeet impression of the mold thereby obtained; and, further, in the provision of the packingboxes M, whereby I am able to secure a perfectly regular and equable motion of the rods P in raising the pattern-plate E out of the nished mold contained in the box C; and, further', in the provision of the telescopicfcasings R, which are attached at their upper extremities to a laterally-projecting cap of the rod P, and extend downward far enough to prevent the sand or any foreign substances from coming in contact with or adhering' to the packing-boxes M or the rods P. The casings R are raised and lowered with the rod P, and at all times afford a projecting cover to the rod and its working bearings 5 and, further, in the provision of the laterally-proj ectin g cap W, held fast to the rods P by means of the setscrew X, Wherebyl am able to loosen the cap W containing the bearings for the trunnions c e', and adjust the rodsP to anyheight that may be desired. By making the cap W separate from the rod P, and securing it thereto by the setscrew X, as shown, the cap can be adjusted so as to have an even bearing with reference to the trunnions ce by being rotated horizontally upon the rod P as a center 5 and, further, in the provision ot' a lateral opening in the frame` work A, wherebythe standard Y, which is secured to the frame-work A by means of bolts,

IOO

can be moved along this lateral opening at the Will of the melder and adjusted to differentsized patterns or molding-boxes, as may be desired.

Having thus described my invention, What I claim as new, and desire to secure by Letters Patent of the United States, is'- 1. In a machine for molding` metal, the combination of molding-plate E, trunnions e e', set-screw L, and adjustable cap W, when attached to suitable mechanism to operate them in the manner described, and for the purpose set forth.

2. In a machine for molding` metals, the combination of the telescopio casings R with rods P, packing-boxes M, to insure steadiness. to and protect bearing of said rods, cap W, and adjustable standards Y, to admit differentspecified.

GEORGE WOOLNOUGH. Witnesses:

FRIEDRICH DENHE, J. FRED DENNIS. 

